Title:
LIQUID CRYSTAL OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/013216
Kind Code:
A1
Abstract:
The purpose of an embodiment is to provide a liquid crystal optical element capable of suppressing a decrease in light utilization efficiency. According to the embodiment, this liquid crystal optical element comprises: an optical waveguide part having a first principal surface and a second principal surface facing the first principal surface; an alignment film disposed on the second principal surface; a liquid crystal layer that overlaps the alignment film, has a cholesteric liquid crystal, and reflects at least part of light incident via the optical waveguide part toward the optical waveguide part; and a transparent first cover member that faces the liquid crystal layer with a first low refractive index layer having a lower refractive index than the liquid crystal layer interposed therebetween.
Inventors:
IGETA KOICHI (JP)
TOMIOKA YASUSHI (JP)
OKA SHINICHIRO (JP)
KOBASHI JUNJI (JP)
YOSHIDA HIROYUKI (JP)
TOMIOKA YASUSHI (JP)
OKA SHINICHIRO (JP)
KOBASHI JUNJI (JP)
YOSHIDA HIROYUKI (JP)
Application Number:
PCT/JP2022/021571
Publication Date:
February 09, 2023
Filing Date:
May 26, 2022
Export Citation:
Assignee:
JAPAN DISPLAY INC (JP)
UNIV OSAKA (JP)
UNIV OSAKA (JP)
International Classes:
G02B5/30; H01L31/054; H02S40/22
Domestic Patent References:
| WO2019131966A1 | 2019-07-04 | |||
| WO2020075738A1 | 2020-04-16 | |||
| WO2021132615A1 | 2021-07-01 | |||
| WO2015125794A1 | 2015-08-27 |
Foreign References:
| JP2015184560A | 2015-10-22 | |||
| CN103236462A | 2013-08-07 | |||
| JP2016114929A | 2016-06-23 | |||
| JP2019028332A | 2019-02-21 | |||
| JP2020027185A | 2020-02-20 | |||
| JP2020501186A | 2020-01-16 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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